Water cooler



FIG. 1 is a top and side perspective view of a water cooler showing my new design;

FIG. 2 is a front perspective view of the water cooler design shown in FIG. 1;

FIG. 3 is a right-side perspective view of the water cooler design shown in FIG. 1;

FIG. 4 is a left-side perspective view of the water cooler design shown in FIG. 1;

FIG. 5 is a rear perspective view of the water cooler design shown in FIG. 1;

FIG. 6 is a top perspective view of the water cooler design shown in FIG. 1; and,

FIG. 7 is a bottom perspective view of the water cooler design shown in FIG. 1.

The broken lines in the drawings depict portions of the water cooler that form no part of the claimed design. 

CLAIM The ornamental design for a water cooler, as shown and described. 